You don’t want to be anywhere near that with in-tank dosing, though.
Here’s what I calculated in tank treatments to be, using 3% H2O2:
1mL/10gal (40L) = 0.75ppm
1mL/8gal (30L) = 0.9ppm
1mL/5gal (19L) = 1.59ppm
1mL/3gal (11L) = 2.73ppm
1mL/1gal (4L) = 7.5ppm
I personally only go up to around 1mL/5gal in my tanks, since they’re mixed reefs. Others dosing fish only tanks have gone up to the 1mL/1gal level. It sounds like Medic tests right in this same range, although I personally still don’t like that they’re vague about what’s in it - is it hydrogen peroxide? Sodium peroxide? Barium peroxide? I found a thread where Randy thinks it could be sodium percarbonate, which is a combo of sodium carbonate and hydrogen peroxide. Given the cost difference and that the formation is unknown, I’d stick with plain old H2O2 myself.